湘玉5号是湖南省作物所育成的特早熟、高产、抗病、耐密型玉米单交种。1996年我们在邵东县进行试验，探讨该品种高产栽培的主次措施，研究该品种播种密度、苗期施氮量、穗朗施氮量、施磷肥和钾肥五种主要措施与产量之间的关系及数学模型，并利用微机寻找优化方案，以期为高产规 Xiang Yu 5 is bred early crop of Hunan Province crops, high yield, disease resistance, tolerance dense corn single cross. In 1996, we experimented in Shaodong County to discuss the primary and secondary measures for high-yielding cultivation of this variety. The effects of planting density, nitrogen application rate at seedling stage, nitrogen fertilizer rate on ear rotation, phosphorus and potassium fertilizer and yield Relations and mathematical models, and use computer to find the optimal program, with a view to high-yield rules